1 | program localtime |
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2 | |
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3 | ! ---------------------------------------------------------------------------- |
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4 | ! Program to redistribute and interpolate the variable a the same |
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5 | ! local times everywhere |
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6 | ! input : diagfi.nc / concat.nc / stats.nc kind of files |
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7 | ! author: F. Forget |
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8 | ! ---------------------------------------------------------------------------- |
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9 | |
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10 | implicit none |
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11 | |
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12 | include "netcdf.inc" ! NetCDF definitions |
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13 | |
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14 | character (len=50) file |
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15 | ! file(): input file(s) names(s) |
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16 | character (len=30), dimension(15) :: notconcat |
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17 | ! notconcat(): names of the (15) variables that won't be concatenated |
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18 | character (len=50), dimension(:), allocatable :: var |
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19 | ! var(): name(s) of variable(s) that will be concatenated |
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20 | character (len=50) :: tmpvar,title,units |
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21 | ! tmpvar(): used to temporarily store a variable name |
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22 | ! title(): [netcdf] title attribute |
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23 | ! units(): [netcdf] units attribute |
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24 | character (len=100) :: filename,vartmp |
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25 | ! filename(): output file name |
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26 | ! vartmp(): temporary variable name (read from netcdf input file) |
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27 | !character (len=1) :: ccopy |
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28 | ! ccpy: 'y' or 'n' answer |
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29 | integer :: nid,ierr,miss |
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30 | ! nid: [netcdf] file ID # |
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31 | ! ierr: [netcdf] subroutine returned error code |
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32 | ! miss: [netcdf] subroutine returned error code |
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33 | integer :: i,j,k,inter |
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34 | ! for various loops |
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35 | integer :: varid |
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36 | ! varid: [netcdf] variable ID # |
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37 | real, dimension(:), allocatable:: lat,lon,alt,ctl,time |
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38 | ! lat(): array, stores latitude coordinates |
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39 | ! lon(): array, stores longitude coordinates |
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40 | ! alt(): array, stores altitude coordinates |
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41 | ! ctl(): array, stores controle array |
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42 | ! time(): array, stores time coordinates |
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43 | integer :: nbvar,nbvarfile,ndim |
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44 | ! nbvar: # of variables to concatenate |
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45 | ! nbfile: # number of input file(s) |
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46 | ! nbvarfile: total # of variables in an input file |
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47 | ! ndim: [netcdf] # (3 or 4) of dimensions (for variables) |
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48 | integer :: latdim,londim,altdim,ctldim,timedim |
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49 | ! latdim: [netcdf] "latitude" dim ID |
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50 | ! londim: [netcdf] "longitude" dim ID |
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51 | ! altdim: [netcdf] "altdim" dim ID |
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52 | ! ctldim: [netcdf] "controle" dim ID |
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53 | ! timedim: [netcdf] "timedim" dim ID |
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54 | integer :: latvar,lonvar,altvar,ctlvar,timevar |
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55 | ! latvar: [netcdf] ID of "latitude" variable |
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56 | ! lonvar: [netcdf] ID of "longitude" variable |
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57 | ! altvar: [netcdf] ID of "altitude" variable |
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58 | ! ctlvar: [netcdf] ID of "controle" variable |
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59 | ! timevar: [netcdf] ID of "Time" variable |
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60 | integer :: latlen,lonlen,altlen,ctllen,timelen,timelen_lt,timelen_tot |
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61 | integer :: ilat,ilon,ialt,it |
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62 | ! latlen: # of elements of lat() array |
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63 | ! lonlen: # of elements of lon() array |
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64 | ! altvar: # of elements of alt() array |
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65 | ! ctlvar: # of elements of ctl() array |
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66 | ! timelen: # of elemnets of time() array |
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67 | ! timelen_tot:# =timelen or timelen+1 (if 1 more time to interpolate needed) |
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68 | ! timelen_lt: # of elemnets of time() array in output |
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69 | integer :: nout,latdimout,londimout,altdimout,timedimout,timevarout |
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70 | integer :: nhour,nsol |
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71 | ! nout: [netcdf] output file ID |
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72 | ! latdimout: [netcdf] output latitude (dimension) ID |
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73 | ! londimout: [netcdf] output longitude (dimension) ID |
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74 | ! altdimout: [netcdf] output altitude (dimension) ID |
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75 | ! timedimout: [netcdf] output time (dimension) ID |
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76 | ! timevarout: [netcdf] ID of output "Time" variable |
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77 | integer :: varidout |
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78 | ! varidout: [netcdf] variable ID # (of a variable to write to the output file) |
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79 | integer :: Nnotconcat,var_ok |
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80 | ! Nnotconcat: # of (leading)variables that won't be concatenated |
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81 | ! var_ok: flag (0 or 1) |
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82 | integer, dimension(4) :: corner,edges,dim |
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83 | ! corner: [netcdf] |
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84 | ! edges: [netcdf] |
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85 | ! dim: [netcdf] |
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86 | real, dimension(:,:,:,:), allocatable :: var3d |
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87 | ! var3D(,,,): 4D array to store a field |
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88 | |
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89 | real, dimension(:,:,:,:), allocatable :: var3d_lt |
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90 | ! var3D_lt(,,,): 4D array to store a field in local time coordinate |
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91 | real, dimension(:), allocatable :: lt_gcm,lt_hour |
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92 | real, dimension(:), allocatable :: lt_out,lt_outc |
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93 | real, dimension(:), allocatable :: var_gcm |
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94 | |
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95 | real :: missing |
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96 | !PARAMETER(missing=1E+20) |
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97 | ! missing: [netcdf] to handle "missing" values when reading/writing files |
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98 | real, dimension(2) :: valid_range |
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99 | ! valid_range(2): [netcdf] interval in which a value is considered valid |
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100 | logical :: stats ! stats=T when reading a "stats" kind of ile |
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101 | |
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102 | |
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103 | !============================================================================== |
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104 | ! 1.1. Get input file name(s) |
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105 | !============================================================================== |
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106 | write(*,*) |
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107 | write(*,*) "which file do you want to use? (diagfi... stats... concat...)" |
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108 | |
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109 | read(*,'(a50)') file |
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110 | |
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111 | if (len_trim(file).eq.0) then |
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112 | write(*,*) "no file... game over" |
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113 | stop "" |
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114 | endif |
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115 | |
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116 | !============================================================================== |
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117 | ! 1.3. Open the first input file |
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118 | !============================================================================== |
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119 | |
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120 | ierr = NF_OPEN(file,NF_NOWRITE,nid) |
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121 | if (ierr.NE.NF_NOERR) then |
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122 | write(*,*) 'ERROR: Pb opening file '//file |
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123 | stop "" |
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124 | endif |
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125 | |
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126 | ierr=NF_INQ_NVARS(nid,nbvarfile) |
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127 | ! nbvarfile now set to be the (total) number of variables in file |
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128 | |
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129 | !============================================================================== |
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130 | ! 1.4. Ask for (output) "Time" axis type |
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131 | !============================================================================== |
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132 | |
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133 | notconcat(1)='Time' |
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134 | notconcat(2)='controle' |
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135 | notconcat(3)='rlonu' |
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136 | notconcat(4)='latitude' |
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137 | notconcat(5)='longitude' |
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138 | notconcat(6)='altitude' |
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139 | notconcat(7)='rlatv' |
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140 | notconcat(8)='aps' |
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141 | notconcat(9)='bps' |
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142 | notconcat(10)='ap' |
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143 | notconcat(11)='bp' |
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144 | notconcat(12)='cu' |
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145 | notconcat(13)='cv' |
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146 | notconcat(14)='aire' |
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147 | notconcat(15)='phisinit' |
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148 | |
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149 | !============================================================================== |
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150 | ! 1.5. Get (and check) list of variables to concatenate |
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151 | !============================================================================== |
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152 | write(*,*) |
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153 | Nnotconcat=0 |
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154 | do i=1,nbvarfile |
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155 | ierr=NF_INQ_VARNAME(nid,i,vartmp) |
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156 | ! vartmp now contains the "name" of variable of ID # i |
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157 | var_ok=0 |
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158 | do inter=1,15 |
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159 | if (vartmp.eq.notconcat(inter)) then |
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160 | var_ok=1 |
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161 | Nnotconcat=Nnotconcat+1 |
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162 | endif |
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163 | enddo |
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164 | if (var_ok.eq.0) write(*,*) trim(vartmp) |
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165 | enddo |
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166 | |
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167 | ! Nnotconcat: # of variables that won't be concatenated |
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168 | ! nbvarfile: total # of variables in file |
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169 | allocate(var(nbvarfile-Nnotconcat)) |
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170 | |
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171 | |
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172 | write(*,*) |
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173 | write(*,*) "which variables do you want to redistribute ?" |
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174 | write(*,*) "all / list of <variables> (separated by <Enter>s)" |
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175 | write(*,*) "(an empty line , i.e: just <Enter>, implies end of list)" |
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176 | nbvar=0 |
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177 | read(*,'(a50)') tmpvar |
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178 | do while ((tmpvar/=' ').AND.(trim(tmpvar)/='all')) |
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179 | nbvar=nbvar+1 |
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180 | var(nbvar)=tmpvar |
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181 | read(*,'(a50)') tmpvar |
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182 | enddo |
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183 | |
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184 | if (tmpvar=="all") then |
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185 | nbvar=nbvarfile-Nnotconcat |
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186 | do j=Nnotconcat+1,nbvarfile |
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187 | ierr=nf_inq_varname(nid,j,var(j-Nnotconcat)) |
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188 | enddo |
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189 | ! Variables names from the file are catched |
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190 | nbvar=nbvarfile-Nnotconcat |
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191 | do i=1,nbvar |
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192 | ierr=nf_inq_varname(nid,i+Nnotconcat,var(i)) |
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193 | write(*,'(a9,1x,i2,1x,a1,1x,a50)') "variable ",i,":",var(i) |
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194 | enddo |
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195 | else if(nbvar==0) then |
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196 | write(*,*) "no variable... game over" |
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197 | stop "" |
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198 | endif ! of if (tmpvar=="all") |
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199 | |
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200 | !============================================================================== |
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201 | ! 1.6. Get output file name |
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202 | !============================================================================== |
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203 | filename=file(1:len_trim(file)-3)//"_LT.nc" |
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204 | write(*,*) filename |
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205 | |
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206 | !============================================================================== |
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207 | ! 2.1. Open input file |
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208 | !============================================================================== |
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209 | |
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210 | if (i/=1) then |
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211 | write(*,*) |
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212 | write(*,*) "opening "//trim(file)//"..." |
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213 | ierr = NF_OPEN(file,NF_NOWRITE,nid) |
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214 | if (ierr.NE.NF_NOERR) then |
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215 | write(*,*) 'ERROR: Pb opening file '//file |
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216 | write(*,*) NF_STRERROR(ierr) |
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217 | stop "" |
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218 | endif |
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219 | endif |
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220 | |
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221 | !============================================================================== |
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222 | ! 2.2. Read (and check) dimensions of variables from input file |
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223 | !============================================================================== |
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224 | |
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225 | ierr=NF_INQ_DIMID(nid,"latitude",latdim) |
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226 | ierr=NF_INQ_VARID(nid,"latitude",latvar) |
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227 | if (ierr.NE.NF_NOERR) then |
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228 | write(*,*) 'ERROR: Field <latitude> is missing in file'//file |
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229 | stop "" |
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230 | endif |
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231 | ierr=NF_INQ_DIMLEN(nid,latdim,latlen) |
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232 | ! write(*,*) "latlen: ",latlen |
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233 | |
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234 | ierr=NF_INQ_DIMID(nid,"longitude",londim) |
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235 | ierr=NF_INQ_VARID(nid,"longitude",lonvar) |
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236 | if (ierr.NE.NF_NOERR) then |
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237 | write(*,*) 'ERROR: Field <longitude> is missing in file'//file |
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238 | stop "" |
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239 | endif |
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240 | ierr=NF_INQ_DIMLEN(nid,londim,lonlen) |
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241 | ! write(*,*) "lonlen: ",lonlen |
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242 | |
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243 | ierr=NF_INQ_DIMID(nid,"altitude",altdim) |
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244 | ierr=NF_INQ_VARID(nid,"altitude",altvar) |
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245 | if (ierr.NE.NF_NOERR) then |
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246 | write(*,*) 'ERROR: Field <altitude> is missing in file'//file |
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247 | stop "" |
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248 | endif |
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249 | ierr=NF_INQ_DIMLEN(nid,altdim,altlen) |
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250 | ! write(*,*) "altlen: ",altlen |
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251 | |
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252 | ierr=NF_INQ_DIMID(nid,"index",ctldim) |
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253 | ierr=NF_INQ_VARID(nid,"controle",ctlvar) |
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254 | if (ierr.NE.NF_NOERR) then |
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255 | write(*,*) 'Field <controle> is missing in file'//file |
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256 | ctllen=0 |
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257 | !stop "" |
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258 | else |
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259 | ierr=NF_INQ_DIMLEN(nid,ctldim,ctllen) |
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260 | endif |
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261 | ! write(*,*) "controle: ",controle |
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262 | |
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263 | !============================================================================== |
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264 | ! 2.3. Read (and check compatibility of) dimensions of |
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265 | ! variables from input file |
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266 | !============================================================================== |
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267 | |
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268 | ! First call; initialize/allocate |
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269 | allocate(lat(latlen)) |
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270 | allocate(lon(lonlen)) |
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271 | allocate(alt(altlen)) |
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272 | allocate(ctl(ctllen)) |
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273 | #ifdef NC_DOUBLE |
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274 | ierr = NF_GET_VAR_DOUBLE(nid,latvar,lat) |
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275 | ierr = NF_GET_VAR_DOUBLE(nid,lonvar,lon) |
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276 | ierr = NF_GET_VAR_DOUBLE(nid,altvar,alt) |
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277 | if (ctllen .ne. -1) ierr = NF_GET_VAR_DOUBLE(nid,ctlvar,ctl) |
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278 | #else |
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279 | ierr = NF_GET_VAR_REAL(nid,latvar,lat) |
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280 | ierr = NF_GET_VAR_REAL(nid,lonvar,lon) |
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281 | ierr = NF_GET_VAR_REAL(nid,altvar,alt) |
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282 | if (ctllen .ne. -1) ierr = NF_GET_VAR_REAL(nid,ctlvar,ctl) |
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283 | #endif |
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284 | !============================================================================== |
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285 | ! 2.4. Handle "Time" dimension from input file |
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286 | !============================================================================== |
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287 | |
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288 | !============================================================================== |
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289 | ! 2.4.0 Read "Time" dimension from input file |
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290 | !============================================================================== |
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291 | ierr=NF_INQ_DIMID(nid,"Time",timedim) |
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292 | if (ierr.NE.NF_NOERR) then |
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293 | write(*,*) 'ERROR: Dimension <Time> is missing in file'//file |
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294 | stop "" |
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295 | endif |
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296 | ierr=NF_INQ_VARID(nid,"Time",timevar) |
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297 | if (ierr.NE.NF_NOERR) then |
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298 | write(*,*) 'ERROR: Field <Time> is missing in file'//file |
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299 | stop "" |
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300 | endif |
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301 | ierr=NF_INQ_DIMLEN(nid,timedim,timelen) |
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302 | ! write(*,*) "timelen: ",timelen |
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303 | |
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304 | ! allocate time() array and fill it with values from input file |
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305 | allocate(time(timelen)) |
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306 | |
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307 | #ifdef NC_DOUBLE |
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308 | ierr = NF_GET_VAR_DOUBLE(nid,timevar,time) |
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309 | #else |
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310 | ierr = NF_GET_VAR_REAL(nid,timevar,time) |
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311 | #endif |
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312 | |
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313 | |
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314 | !============================================================================== |
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315 | ! 2.4.1 Select local times to be saved "Time" in output file |
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316 | !============================================================================== |
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317 | write(*,*) 'number of local time to be used ?' |
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318 | read(*,*) nhour |
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319 | allocate(lt_hour(nhour)) |
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320 | write(*,*) 'list of selected local time (0<t<24)' |
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321 | do it=1,nhour |
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322 | read(*,*) lt_hour(it) |
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323 | end do |
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324 | |
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325 | if ((timelen.eq.12).and.(time(1).eq.2).and.(time(timelen).eq.24))then |
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326 | write(*,*) 'We detect a ""stats"" file' |
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327 | stats=.true. |
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328 | timelen_lt=nhour |
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329 | allocate(lt_out(timelen_lt)) |
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330 | do it=1,nhour |
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331 | lt_out(it)=lt_hour(it)/24. |
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332 | end do |
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333 | ! We rewrite the time from "stats" from 0 to 1 sol... |
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334 | do it=1,timelen ! loop temps in |
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335 | time(it) = time(it)/24. |
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336 | end do |
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337 | nsol =1 |
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338 | else ! case of a diagfi or concatnc file |
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339 | stats=.false. |
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340 | ! Number of sol in input file |
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341 | nsol = int(time(timelen)) - int(time(1)) |
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342 | timelen_lt=nhour*nsol |
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343 | allocate(lt_out(timelen_lt)) |
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344 | i=0 |
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345 | do k=1,nsol |
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346 | do it=1,nhour |
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347 | i=i+1 |
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348 | lt_out(i)=int(time(1)) + k-1 + lt_hour(it)/24. |
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349 | end do |
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350 | end do |
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351 | end if |
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352 | |
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353 | if (nsol.gt.1) then |
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354 | timelen_tot=timelen |
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355 | else |
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356 | ! if only 1 sol available, we must add 1 timestep for the interpolation |
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357 | timelen_tot=timelen+1 |
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358 | endif |
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359 | allocate(lt_gcm(timelen_tot)) |
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360 | allocate(var_gcm(timelen_tot)) |
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361 | |
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362 | allocate(lt_outc(timelen_lt)) |
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363 | |
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364 | |
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365 | !============================================================================== |
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366 | ! 2.4.1.5 Initiate dimension in output file |
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367 | !============================================================================== |
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368 | |
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369 | |
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370 | ! Initialize output file's lat,lon,alt and time dimensions |
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371 | call initiate (filename,lat,lon,alt,ctl,nout,& |
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372 | latdimout,londimout,altdimout,timedimout,timevarout) |
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373 | ! Initialize output file's aps,bps and phisinit variables |
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374 | call init2(nid,lonlen,latlen,altlen,& |
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375 | nout,londimout,latdimout,altdimout) |
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376 | |
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377 | |
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378 | !============================================================================== |
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379 | ! 2.4.2 Write/extend "Time" dimension/values in output file |
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380 | !============================================================================== |
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381 | |
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382 | if (stats) then |
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383 | |
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384 | do it=1,timelen_lt |
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385 | #ifdef NC_DOUBLE |
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386 | ierr= NF_PUT_VARA_DOUBLE(nout,timevarout,it,1,lt_hour(it)) |
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387 | #else |
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388 | ierr= NF_PUT_VARA_REAL(nout,timevarout,it,1,lt_hour(it)) |
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389 | #endif |
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390 | enddo |
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391 | else |
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392 | do it=1,timelen_lt |
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393 | #ifdef NC_DOUBLE |
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394 | ierr= NF_PUT_VARA_DOUBLE(nout,timevarout,it,1,lt_out(it)) |
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395 | #else |
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396 | ierr= NF_PUT_VARA_REAL(nout,timevarout,it,1,lt_out(it)) |
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397 | #endif |
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398 | enddo |
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399 | end if |
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400 | |
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401 | !============================================================================== |
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402 | ! 2.5 Read/write variables |
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403 | !============================================================================== |
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404 | |
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405 | do j=1,nbvar ! loop on variables to read/write |
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406 | |
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407 | !============================================================================== |
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408 | ! 2.5.1 Check that variable to be read existe in input file |
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409 | !============================================================================== |
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410 | |
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411 | write(*,*) "variable ",var(j) |
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412 | ierr=nf_inq_varid(nid,var(j),varid) |
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413 | if (ierr.NE.NF_NOERR) then |
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414 | write(*,*) 'ERROR: Field <',var(j),'> not found in file'//file |
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415 | stop "" |
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416 | endif |
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417 | ierr=nf_inq_varndims(nid,varid,ndim) |
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418 | |
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419 | !============================================================================== |
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420 | ! 2.5.2 Prepare things in order to read/write the variable |
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421 | !============================================================================== |
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422 | |
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423 | ! build dim(),corner() and edges() arrays |
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424 | ! and allocate var3d() array |
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425 | if (ndim==3) then |
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426 | allocate(var3d(lonlen,latlen,timelen,1)) |
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427 | allocate(var3d_lt(lonlen,latlen,timelen_lt,1)) |
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428 | dim(1)=londimout |
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429 | dim(2)=latdimout |
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430 | dim(3)=timedimout |
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431 | |
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432 | ! start indexes (where data values will be written) |
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433 | corner(1)=1 |
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434 | corner(2)=1 |
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435 | corner(3)=1 |
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436 | corner(4)=1 |
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437 | |
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438 | ! length (along dimensions) of block of data to be written |
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439 | edges(1)=lonlen |
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440 | edges(2)=latlen |
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441 | edges(3)=timelen_lt |
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442 | edges(4)=1 |
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443 | |
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444 | else if (ndim==4) then |
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445 | allocate(var3d(lonlen,latlen,altlen,timelen)) |
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446 | allocate(var3d_lt(lonlen,latlen,altlen,timelen_lt)) |
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447 | dim(1)=londimout |
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448 | dim(2)=latdimout |
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449 | dim(3)=altdimout |
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450 | dim(4)=timedimout |
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451 | |
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452 | ! start indexes (where data values will be written) |
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453 | corner(1)=1 |
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454 | corner(2)=1 |
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455 | corner(3)=1 |
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456 | corner(4)=1 |
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457 | |
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458 | ! length (along dimensions) of block of data to be written |
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459 | edges(1)=lonlen |
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460 | edges(2)=latlen |
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461 | edges(3)=altlen |
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462 | edges(4)=timelen_lt |
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463 | endif |
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464 | |
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465 | units=" " |
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466 | title=" " |
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467 | ierr=nf_get_att_text(nid,varid,"title",title) |
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468 | ierr=nf_get_att_text(nid,varid,"units",units) |
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469 | call def_var(nout,var(j),title,units,ndim,dim,varidout,ierr) |
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470 | |
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471 | |
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472 | |
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473 | !============================================================================== |
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474 | ! 2.5.3 Read from input file |
---|
475 | !============================================================================== |
---|
476 | |
---|
477 | #ifdef NC_DOUBLE |
---|
478 | ierr = NF_GET_VAR_DOUBLE(nid,varid,var3d) |
---|
479 | miss=NF_GET_ATT_DOUBLE(nid,varid,"missing_value",missing) |
---|
480 | miss=NF_GET_ATT_DOUBLE(nid,varid,"valid_range",valid_range) |
---|
481 | #else |
---|
482 | ierr = NF_GET_VAR_REAL(nid,varid,var3d) |
---|
483 | miss=NF_GET_ATT_REAL(nid,varid,"missing_value",missing) |
---|
484 | miss=NF_GET_ATT_REAL(nid,varid,"valid_range",valid_range) |
---|
485 | #endif |
---|
486 | |
---|
487 | !============================================================================== |
---|
488 | ! 2.5.4 Read from input file |
---|
489 | !============================================================================== |
---|
490 | ! Interpolation in local time : |
---|
491 | |
---|
492 | do ilon=1,lonlen |
---|
493 | ! write(*,*) 'processing longitude =', lon(ilon) |
---|
494 | ! Local time at each longitude : |
---|
495 | do it=1,timelen ! loop temps in |
---|
496 | lt_gcm(it) = time(it) +0.5*lon(ilon)/180. |
---|
497 | end do |
---|
498 | if (nsol.eq.1) lt_gcm(timelen+1) = lt_gcm(1)+1 |
---|
499 | |
---|
500 | do it=1,timelen_lt ! loop time local time |
---|
501 | lt_outc(it)=lt_out(it) |
---|
502 | ! Correction to use same local time previous or following |
---|
503 | ! day where data are missing : |
---|
504 | |
---|
505 | if(lt_outc(it).gt.lt_gcm(timelen_tot))lt_outc(it)=lt_out(it)-1 |
---|
506 | if(lt_outc(it).lt.lt_gcm(1))lt_outc(it)=lt_out(it)+1 |
---|
507 | end do |
---|
508 | |
---|
509 | if (ndim==3) then |
---|
510 | do ilat=1,latlen |
---|
511 | do it=1,timelen ! loop temps in |
---|
512 | var_gcm(it) = var3d(ilon,ilat,it,1) |
---|
513 | end do |
---|
514 | if (nsol.eq.1) var_gcm(timelen+1) = var_gcm(1) |
---|
515 | do it=1,timelen_lt ! loop time local time |
---|
516 | call interpolf(lt_outc(it),var3d_lt(ilon,ilat,it,1),& |
---|
517 | missing,lt_gcm,var_gcm,timelen_tot) |
---|
518 | end do |
---|
519 | enddo |
---|
520 | |
---|
521 | else if (ndim==4) then |
---|
522 | do ilat=1,latlen |
---|
523 | do ialt=1,altlen |
---|
524 | do it=1,timelen ! loop temps in |
---|
525 | var_gcm(it) = var3d(ilon,ilat,ialt,it) |
---|
526 | end do |
---|
527 | if (nsol.eq.1) var_gcm(timelen+1) = var_gcm(1) |
---|
528 | do it=1,timelen_lt ! loop time local time |
---|
529 | call interpolf(lt_outc(it),var3d_lt(ilon,ilat,ialt,it),& |
---|
530 | missing,lt_gcm,var_gcm,timelen_tot) |
---|
531 | end do |
---|
532 | enddo |
---|
533 | enddo |
---|
534 | end if |
---|
535 | |
---|
536 | end do |
---|
537 | |
---|
538 | |
---|
539 | !============================================================================== |
---|
540 | ! 2.5.5 write (append) to the output file |
---|
541 | !============================================================================== |
---|
542 | |
---|
543 | #ifdef NC_DOUBLE |
---|
544 | ierr= NF_PUT_VARA_DOUBLE(nout,varidout,corner,edges,var3d_lt) |
---|
545 | #else |
---|
546 | ierr= NF_PUT_VARA_REAL(nout,varidout,corner,edges,var3d_lt) |
---|
547 | #endif |
---|
548 | |
---|
549 | if (ierr.ne.NF_NOERR) then |
---|
550 | write(*,*) 'PUT_VAR ERROR: ',NF_STRERROR(ierr) |
---|
551 | stop "" |
---|
552 | endif |
---|
553 | |
---|
554 | ! In case there is a "valid_range" attribute |
---|
555 | ! Write "valid_range" and "missing_value" attributes in output file |
---|
556 | if (miss.eq.NF_NOERR) then |
---|
557 | call missing_value(nout,varidout,valid_range,missing) |
---|
558 | endif |
---|
559 | |
---|
560 | ! free var3d() array |
---|
561 | deallocate(var3d) |
---|
562 | deallocate(var3d_lt) |
---|
563 | |
---|
564 | enddo ! of do j=1,nbvar |
---|
565 | |
---|
566 | deallocate(time) |
---|
567 | deallocate(lt_gcm) |
---|
568 | deallocate(lt_out) |
---|
569 | deallocate(lt_outc) |
---|
570 | deallocate(var_gcm) |
---|
571 | |
---|
572 | ! Close input file |
---|
573 | ierr=nf_close(nid) |
---|
574 | |
---|
575 | ! Close output file |
---|
576 | ierr=NF_CLOSE(nout) |
---|
577 | |
---|
578 | contains |
---|
579 | |
---|
580 | !****************************************************************************** |
---|
581 | Subroutine initiate (filename,lat,lon,alt,ctl,& |
---|
582 | nout,latdimout,londimout,altdimout,timedimout,timevarout) |
---|
583 | !============================================================================== |
---|
584 | ! Purpose: |
---|
585 | ! Create and initialize a data file (NetCDF format) |
---|
586 | !============================================================================== |
---|
587 | ! Remarks: |
---|
588 | ! The NetCDF file (created in this subroutine) remains open |
---|
589 | !============================================================================== |
---|
590 | |
---|
591 | implicit none |
---|
592 | |
---|
593 | include "netcdf.inc" ! NetCDF definitions |
---|
594 | |
---|
595 | !============================================================================== |
---|
596 | ! Arguments: |
---|
597 | !============================================================================== |
---|
598 | character (len=*), intent(in):: filename |
---|
599 | ! filename(): the file's name |
---|
600 | real, dimension(:), intent(in):: lat |
---|
601 | ! lat(): latitude |
---|
602 | real, dimension(:), intent(in):: lon |
---|
603 | ! lon(): longitude |
---|
604 | real, dimension(:), intent(in):: alt |
---|
605 | ! alt(): altitude |
---|
606 | real, dimension(:), intent(in):: ctl |
---|
607 | ! ctl(): controle |
---|
608 | integer, intent(out):: nout |
---|
609 | ! nout: [netcdf] file ID |
---|
610 | integer, intent(out):: latdimout |
---|
611 | ! latdimout: [netcdf] lat() (i.e.: latitude) ID |
---|
612 | integer, intent(out):: londimout |
---|
613 | ! londimout: [netcdf] lon() ID |
---|
614 | integer, intent(out):: altdimout |
---|
615 | ! altdimout: [netcdf] alt() ID |
---|
616 | integer, intent(out):: timedimout |
---|
617 | ! timedimout: [netcdf] "Time" ID |
---|
618 | integer, intent(out):: timevarout |
---|
619 | ! timevarout: [netcdf] "Time" (considered as a variable) ID |
---|
620 | |
---|
621 | !============================================================================== |
---|
622 | ! Local variables: |
---|
623 | !============================================================================== |
---|
624 | !integer :: latdim,londim,altdim,timedim |
---|
625 | integer :: nvarid,ierr |
---|
626 | integer :: ctldimout |
---|
627 | ! nvarid: [netcdf] ID of a variable |
---|
628 | ! ierr: [netcdf] return error code (from called subroutines) |
---|
629 | |
---|
630 | !============================================================================== |
---|
631 | ! 1. Create (and open) output file |
---|
632 | !============================================================================== |
---|
633 | write(*,*) "creating "//trim(adjustl(filename))//'...' |
---|
634 | ierr = NF_CREATE(filename,IOR(NF_CLOBBER,NF_64BIT_OFFSET),nout) |
---|
635 | ! NB: setting NF_CLOBBER mode means that it's OK to overwrite an existing file |
---|
636 | if (ierr.NE.NF_NOERR) then |
---|
637 | WRITE(*,*)'ERROR: Impossible to create the file.' |
---|
638 | stop "" |
---|
639 | endif |
---|
640 | |
---|
641 | !============================================================================== |
---|
642 | ! 2. Define/write "dimensions" and get their IDs |
---|
643 | !============================================================================== |
---|
644 | |
---|
645 | ierr = NF_DEF_DIM(nout, "latitude", size(lat), latdimout) |
---|
646 | ierr = NF_DEF_DIM(nout, "longitude", size(lon), londimout) |
---|
647 | ierr = NF_DEF_DIM(nout, "altitude", size(alt), altdimout) |
---|
648 | if (size(ctl).ne.0) ierr = NF_DEF_DIM(nout, "index", size(ctl), ctldimout) |
---|
649 | ierr = NF_DEF_DIM(nout, "Time", NF_UNLIMITED, timedimout) |
---|
650 | |
---|
651 | ! End netcdf define mode |
---|
652 | ierr = NF_ENDDEF(nout) |
---|
653 | |
---|
654 | !============================================================================== |
---|
655 | ! 3. Write "Time" and its attributes |
---|
656 | !============================================================================== |
---|
657 | |
---|
658 | call def_var(nout,"Time","Time","years since 0000-00-0 00:00:00",1,& |
---|
659 | (/timedimout/),timevarout,ierr) |
---|
660 | |
---|
661 | !============================================================================== |
---|
662 | ! 4. Write "latitude" (data and attributes) |
---|
663 | !============================================================================== |
---|
664 | |
---|
665 | call def_var(nout,"latitude","latitude","degrees_north",1,& |
---|
666 | (/latdimout/),nvarid,ierr) |
---|
667 | |
---|
668 | #ifdef NC_DOUBLE |
---|
669 | ierr = NF_PUT_VAR_DOUBLE (nout,nvarid,lat) |
---|
670 | #else |
---|
671 | ierr = NF_PUT_VAR_REAL (nout,nvarid,lat) |
---|
672 | #endif |
---|
673 | |
---|
674 | !============================================================================== |
---|
675 | ! 4. Write "longitude" (data and attributes) |
---|
676 | !============================================================================== |
---|
677 | |
---|
678 | call def_var(nout,"longitude","East longitude","degrees_east",1,& |
---|
679 | (/londimout/),nvarid,ierr) |
---|
680 | |
---|
681 | #ifdef NC_DOUBLE |
---|
682 | ierr = NF_PUT_VAR_DOUBLE (nout,nvarid,lon) |
---|
683 | #else |
---|
684 | ierr = NF_PUT_VAR_REAL (nout,nvarid,lon) |
---|
685 | #endif |
---|
686 | |
---|
687 | !============================================================================== |
---|
688 | ! 5. Write "altitude" (data and attributes) |
---|
689 | !============================================================================== |
---|
690 | |
---|
691 | ! Switch to netcdf define mode |
---|
692 | ierr = NF_REDEF (nout) |
---|
693 | |
---|
694 | #ifdef NC_DOUBLE |
---|
695 | ierr = NF_DEF_VAR (nout,"altitude",NF_DOUBLE,1,altdimout,nvarid) |
---|
696 | #else |
---|
697 | ierr = NF_DEF_VAR (nout,"altitude",NF_FLOAT,1,altdimout,nvarid) |
---|
698 | #endif |
---|
699 | |
---|
700 | ierr = NF_PUT_ATT_TEXT (nout,nvarid,"long_name",8,"altitude") |
---|
701 | ierr = NF_PUT_ATT_TEXT (nout,nvarid,'units',2,"km") |
---|
702 | ierr = NF_PUT_ATT_TEXT (nout,nvarid,'positive',2,"up") |
---|
703 | |
---|
704 | ! End netcdf define mode |
---|
705 | ierr = NF_ENDDEF(nout) |
---|
706 | |
---|
707 | #ifdef NC_DOUBLE |
---|
708 | ierr = NF_PUT_VAR_DOUBLE (nout,nvarid,alt) |
---|
709 | #else |
---|
710 | ierr = NF_PUT_VAR_REAL (nout,nvarid,alt) |
---|
711 | #endif |
---|
712 | |
---|
713 | !============================================================================== |
---|
714 | ! 6. Write "controle" (data and attributes) |
---|
715 | !============================================================================== |
---|
716 | |
---|
717 | if (size(ctl).ne.0) then |
---|
718 | ! Switch to netcdf define mode |
---|
719 | ierr = NF_REDEF (nout) |
---|
720 | |
---|
721 | #ifdef NC_DOUBLE |
---|
722 | ierr = NF_DEF_VAR (nout,"controle",NF_DOUBLE,1,ctldimout,nvarid) |
---|
723 | #else |
---|
724 | ierr = NF_DEF_VAR (nout,"controle",NF_FLOAT,1,ctldimout,nvarid) |
---|
725 | #endif |
---|
726 | |
---|
727 | ierr = NF_PUT_ATT_TEXT (nout,nvarid,"title",18,"Control parameters") |
---|
728 | |
---|
729 | ! End netcdf define mode |
---|
730 | ierr = NF_ENDDEF(nout) |
---|
731 | |
---|
732 | #ifdef NC_DOUBLE |
---|
733 | ierr = NF_PUT_VAR_DOUBLE (nout,nvarid,ctl) |
---|
734 | #else |
---|
735 | ierr = NF_PUT_VAR_REAL (nout,nvarid,ctl) |
---|
736 | #endif |
---|
737 | endif |
---|
738 | |
---|
739 | end Subroutine initiate |
---|
740 | !****************************************************************************** |
---|
741 | subroutine init2(infid,lonlen,latlen,altlen, & |
---|
742 | outfid,londimout,latdimout,altdimout) |
---|
743 | !============================================================================== |
---|
744 | ! Purpose: |
---|
745 | ! Copy aps(), bps() and phisinit() from input file to outpout file |
---|
746 | !============================================================================== |
---|
747 | ! Remarks: |
---|
748 | ! The NetCDF files must be open |
---|
749 | !============================================================================== |
---|
750 | |
---|
751 | implicit none |
---|
752 | |
---|
753 | include "netcdf.inc" ! NetCDF definitions |
---|
754 | |
---|
755 | !============================================================================== |
---|
756 | ! Arguments: |
---|
757 | !============================================================================== |
---|
758 | integer, intent(in) :: infid ! NetCDF output file ID |
---|
759 | integer, intent(in) :: lonlen ! # of grid points along longitude |
---|
760 | integer, intent(in) :: latlen ! # of grid points along latitude |
---|
761 | integer, intent(in) :: altlen ! # of grid points along latitude |
---|
762 | integer, intent(in) :: outfid ! NetCDF output file ID |
---|
763 | integer, intent(in) :: londimout ! longitude dimension ID |
---|
764 | integer, intent(in) :: latdimout ! latitude dimension ID |
---|
765 | integer, intent(in) :: altdimout ! altitude dimension ID |
---|
766 | !============================================================================== |
---|
767 | ! Local variables: |
---|
768 | !============================================================================== |
---|
769 | real,dimension(:),allocatable :: aps,bps ! hybrid vertical coordinates |
---|
770 | real,dimension(:,:),allocatable :: phisinit ! Ground geopotential |
---|
771 | integer :: apsid,bpsid,phisinitid |
---|
772 | integer :: ierr |
---|
773 | integer :: tmpvarid ! temporary variable ID |
---|
774 | logical :: phis, aps_ok, bps_ok ! are "phisinit" "aps" "bps" available ? |
---|
775 | |
---|
776 | |
---|
777 | !============================================================================== |
---|
778 | ! 1. Read data from input file |
---|
779 | !============================================================================== |
---|
780 | |
---|
781 | ! hybrid coordinate aps |
---|
782 | allocate(aps(altlen)) |
---|
783 | ierr=NF_INQ_VARID(infid,"aps",tmpvarid) |
---|
784 | if (ierr.ne.NF_NOERR) then |
---|
785 | write(*,*) "oops Failed to get aps ID. OK" |
---|
786 | aps_ok=.false. |
---|
787 | else |
---|
788 | ierr=NF_GET_VAR_REAL(infid,tmpvarid,aps) |
---|
789 | if (ierr.ne.NF_NOERR) then |
---|
790 | stop "error: Failed reading aps" |
---|
791 | endif |
---|
792 | aps_ok=.true. |
---|
793 | endif |
---|
794 | |
---|
795 | ! hybrid coordinate bps |
---|
796 | allocate(bps(altlen)) |
---|
797 | ierr=NF_INQ_VARID(infid,"bps",tmpvarid) |
---|
798 | if (ierr.ne.NF_NOERR) then |
---|
799 | write(*,*) "oops: Failed to get bps ID. OK" |
---|
800 | bps_ok=.false. |
---|
801 | else |
---|
802 | ierr=NF_GET_VAR_REAL(infid,tmpvarid,bps) |
---|
803 | if (ierr.ne.NF_NOERR) then |
---|
804 | stop "Error: Failed reading bps" |
---|
805 | endif |
---|
806 | bps_ok=.true. |
---|
807 | endif |
---|
808 | |
---|
809 | ! ground geopotential phisinit |
---|
810 | ierr=NF_INQ_VARID(infid,"phisinit",tmpvarid) |
---|
811 | allocate(phisinit(lonlen,latlen)) |
---|
812 | if (ierr.ne.NF_NOERR) then |
---|
813 | write(*,*) "Failed to get phisinit ID. OK" |
---|
814 | phisinit = 0. |
---|
815 | phis = .false. |
---|
816 | else |
---|
817 | ierr=NF_GET_VAR_REAL(infid,tmpvarid,phisinit) |
---|
818 | if (ierr.ne.NF_NOERR) then |
---|
819 | stop "Error: Failed reading phisinit" |
---|
820 | endif |
---|
821 | phis = .true. |
---|
822 | endif |
---|
823 | |
---|
824 | |
---|
825 | !============================================================================== |
---|
826 | ! 2. Write |
---|
827 | !============================================================================== |
---|
828 | |
---|
829 | !============================================================================== |
---|
830 | ! 2.2. Hybrid coordinates aps() and bps() |
---|
831 | !============================================================================== |
---|
832 | |
---|
833 | IF (aps_ok) then |
---|
834 | ! define aps |
---|
835 | call def_var(nout,"aps","hybrid pressure at midlayers"," ",1,& |
---|
836 | (/altdimout/),apsid,ierr) |
---|
837 | if (ierr.ne.NF_NOERR) then |
---|
838 | stop "Error: Failed to def_var aps" |
---|
839 | endif |
---|
840 | |
---|
841 | ! write aps |
---|
842 | #ifdef NC_DOUBLE |
---|
843 | ierr=NF_PUT_VAR_DOUBLE(outfid,apsid,aps) |
---|
844 | #else |
---|
845 | ierr=NF_PUT_VAR_REAL(outfid,apsid,aps) |
---|
846 | #endif |
---|
847 | if (ierr.ne.NF_NOERR) then |
---|
848 | stop "Error: Failed to write aps" |
---|
849 | endif |
---|
850 | ENDIF |
---|
851 | |
---|
852 | IF (bps_ok) then |
---|
853 | ! define bps |
---|
854 | call def_var(nout,"bps","hybrid sigma at midlayers"," ",1,& |
---|
855 | (/altdimout/),bpsid,ierr) |
---|
856 | if (ierr.ne.NF_NOERR) then |
---|
857 | stop "Error: Failed to def_var bps" |
---|
858 | endif |
---|
859 | |
---|
860 | ! write bps |
---|
861 | #ifdef NC_DOUBLE |
---|
862 | ierr=NF_PUT_VAR_DOUBLE(outfid,bpsid,bps) |
---|
863 | #else |
---|
864 | ierr=NF_PUT_VAR_REAL(outfid,bpsid,bps) |
---|
865 | #endif |
---|
866 | if (ierr.ne.NF_NOERR) then |
---|
867 | stop "Error: Failed to write bps" |
---|
868 | endif |
---|
869 | ENDIF |
---|
870 | |
---|
871 | !============================================================================== |
---|
872 | ! 2.2. phisinit() |
---|
873 | !============================================================================== |
---|
874 | |
---|
875 | |
---|
876 | IF (phis) THEN |
---|
877 | |
---|
878 | !define phisinit |
---|
879 | call def_var(nout,"phisinit","Ground level geopotential"," ",2,& |
---|
880 | (/londimout,latdimout/),phisinitid,ierr) |
---|
881 | if (ierr.ne.NF_NOERR) then |
---|
882 | stop "Error: Failed to def_var phisinit" |
---|
883 | endif |
---|
884 | |
---|
885 | ! write phisinit |
---|
886 | #ifdef NC_DOUBLE |
---|
887 | ierr=NF_PUT_VAR_DOUBLE(outfid,phisinitid,phisinit) |
---|
888 | #else |
---|
889 | ierr=NF_PUT_VAR_REAL(outfid,phisinitid,phisinit) |
---|
890 | #endif |
---|
891 | if (ierr.ne.NF_NOERR) then |
---|
892 | stop "Error: Failed to write phisinit" |
---|
893 | endif |
---|
894 | |
---|
895 | END IF |
---|
896 | |
---|
897 | |
---|
898 | ! Cleanup |
---|
899 | deallocate(aps) |
---|
900 | deallocate(bps) |
---|
901 | deallocate(phisinit) |
---|
902 | |
---|
903 | end subroutine init2 |
---|
904 | !****************************************************************************** |
---|
905 | subroutine def_var(nid,name,title,units,nbdim,dim,nvarid,ierr) |
---|
906 | !============================================================================== |
---|
907 | ! Purpose: Write a variable (i.e: add a variable to a dataset) |
---|
908 | ! called "name"; along with its attributes "title", "units"... |
---|
909 | ! to a file (following the NetCDF format) |
---|
910 | !============================================================================== |
---|
911 | ! Remarks: |
---|
912 | ! The NetCDF file must be open |
---|
913 | !============================================================================== |
---|
914 | |
---|
915 | implicit none |
---|
916 | |
---|
917 | include "netcdf.inc" ! NetCDF definitions |
---|
918 | |
---|
919 | !============================================================================== |
---|
920 | ! Arguments: |
---|
921 | !============================================================================== |
---|
922 | integer, intent(in) :: nid |
---|
923 | ! nid: [netcdf] file ID # |
---|
924 | character (len=*), intent(in) :: name |
---|
925 | ! name(): [netcdf] variable's name |
---|
926 | character (len=*), intent(in) :: title |
---|
927 | ! title(): [netcdf] variable's "title" attribute |
---|
928 | character (len=*), intent(in) :: units |
---|
929 | ! unit(): [netcdf] variable's "units" attribute |
---|
930 | integer, intent(in) :: nbdim |
---|
931 | ! nbdim: number of dimensions of the variable |
---|
932 | integer, dimension(nbdim), intent(in) :: dim |
---|
933 | ! dim(nbdim): [netcdf] dimension(s) ID(s) |
---|
934 | integer, intent(out) :: nvarid |
---|
935 | ! nvarid: [netcdf] ID # of the variable |
---|
936 | integer, intent(out) :: ierr |
---|
937 | ! ierr: [netcdf] subroutines returned error code |
---|
938 | |
---|
939 | ! Switch to netcdf define mode |
---|
940 | ierr=NF_REDEF(nid) |
---|
941 | |
---|
942 | ! Insert the definition of the variable |
---|
943 | #ifdef NC_DOUBLE |
---|
944 | ierr=NF_DEF_VAR(nid,adjustl(name),NF_DOUBLE,nbdim,dim,nvarid) |
---|
945 | #else |
---|
946 | ierr=NF_DEF_VAR(nid,adjustl(name),NF_FLOAT,nbdim,dim,nvarid) |
---|
947 | #endif |
---|
948 | |
---|
949 | ! Write the attributes |
---|
950 | ierr=NF_PUT_ATT_TEXT(nid,nvarid,"title",len_trim(adjustl(title)),adjustl(title)) |
---|
951 | ierr=NF_PUT_ATT_TEXT(nid,nvarid,"units",len_trim(adjustl(units)),adjustl(units)) |
---|
952 | |
---|
953 | ! End netcdf define mode |
---|
954 | ierr=NF_ENDDEF(nid) |
---|
955 | |
---|
956 | end subroutine def_var |
---|
957 | !****************************************************************************** |
---|
958 | subroutine missing_value(nout,nvarid,valid_range,missing) |
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959 | !============================================================================== |
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960 | ! Purpose: |
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961 | ! Write "valid_range" and "missing_value" attributes (of a given |
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962 | ! variable) to a netcdf file |
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963 | !============================================================================== |
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964 | ! Remarks: |
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965 | ! NetCDF file must be open |
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966 | ! Variable (nvarid) ID must be set |
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967 | !============================================================================== |
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968 | |
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969 | implicit none |
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970 | |
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971 | include "netcdf.inc" ! NetCDF definitions |
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972 | |
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973 | !============================================================================== |
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974 | ! Arguments: |
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975 | !============================================================================== |
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976 | integer, intent(in) :: nout |
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977 | ! nout: [netcdf] file ID # |
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978 | integer, intent(in) :: nvarid |
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979 | ! varid: [netcdf] variable ID # |
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980 | real, dimension(2), intent(in) :: valid_range |
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981 | ! valid_range(2): [netcdf] "valid_range" attribute (min and max) |
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982 | real, intent(in) :: missing |
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983 | ! missing: [netcdf] "missing_value" attribute |
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984 | |
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985 | !============================================================================== |
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986 | ! Local variables: |
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987 | !============================================================================== |
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988 | integer :: ierr |
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989 | ! ierr: [netcdf] subroutine returned error code |
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990 | ! INTEGER nout,nvarid,ierr |
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991 | ! REAL missing |
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992 | ! REAL valid_range(2) |
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993 | |
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994 | ! Switch to netcdf dataset define mode |
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995 | ierr = NF_REDEF (nout) |
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996 | if (ierr.ne.NF_NOERR) then |
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997 | print*,'missing_value: ' |
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998 | print*, NF_STRERROR(ierr) |
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999 | endif |
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1000 | |
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1001 | ! Write valid_range() attribute |
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1002 | #ifdef NC_DOUBLE |
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1003 | ierr=NF_PUT_ATT_DOUBLE(nout,nvarid,'valid_range',NF_DOUBLE,2,valid_range) |
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1004 | #else |
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1005 | ierr=NF_PUT_ATT_REAL(nout,nvarid,'valid_range',NF_FLOAT,2,valid_range) |
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1006 | #endif |
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1007 | |
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1008 | if (ierr.ne.NF_NOERR) then |
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1009 | print*,'missing_value: valid_range attribution failed' |
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1010 | print*, NF_STRERROR(ierr) |
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1011 | !write(*,*) 'NF_NOERR', NF_NOERR |
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1012 | !CALL abort |
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1013 | stop "" |
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1014 | endif |
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1015 | |
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1016 | ! Write "missing_value" attribute |
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1017 | #ifdef NC_DOUBLE |
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1018 | ierr= NF_PUT_ATT_DOUBLE(nout,nvarid,'missing_value',NF_DOUBLE,1,missing) |
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1019 | #else |
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1020 | ierr= NF_PUT_ATT_REAL(nout,nvarid,'missing_value',NF_FLOAT,1,missing) |
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1021 | #endif |
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1022 | |
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1023 | if (ierr.NE.NF_NOERR) then |
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1024 | print*, 'missing_value: missing value attribution failed' |
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1025 | print*, NF_STRERROR(ierr) |
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1026 | ! WRITE(*,*) 'NF_NOERR', NF_NOERR |
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1027 | ! CALL abort |
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1028 | stop "" |
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1029 | endif |
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1030 | |
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1031 | ! End netcdf dataset define mode |
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1032 | ierr = NF_ENDDEF(nout) |
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1033 | |
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1034 | end subroutine missing_value |
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1035 | !****************************************************************************** |
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1036 | |
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1037 | end program localtime |
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1038 | |
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1039 | !***************************************************************************** |
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1040 | subroutine interpolf(x,y,missing,xd,yd,nd) |
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1041 | !============================================================================== |
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1042 | ! Purpose: |
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1043 | ! Yield y=f(x), where xd() end yd() are arrays of known values, |
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1044 | ! using linear interpolation |
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1045 | ! If x is not included in the interval spaned by xd(), then y is set |
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1046 | ! to a default value 'missing' |
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1047 | ! Note: |
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1048 | ! Array xd() should contain ordered (either increasing or decreasing) abscissas |
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1049 | !============================================================================== |
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1050 | implicit none |
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1051 | !============================================================================== |
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1052 | ! Arguments: |
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1053 | !============================================================================== |
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1054 | real,intent(in) :: x ! abscissa at which interpolation is to be done |
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1055 | real,intent(in) :: missing ! missing value (if no interpolation is performed) |
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1056 | integer :: nd ! size of arrays |
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1057 | real,dimension(nd),intent(in) :: xd ! array of known absissas |
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1058 | real,dimension(nd),intent(in) :: yd ! array of correponding values |
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1059 | |
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1060 | real,intent(out) :: y ! interpolated value |
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1061 | !============================================================================== |
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1062 | ! Local variables: |
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1063 | !============================================================================== |
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1064 | integer :: i |
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1065 | |
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1066 | ! default: set y to 'missing' |
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1067 | y=missing |
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1068 | |
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1069 | do i=1,nd-1 |
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1070 | if (((x.ge.xd(i)).and.(x.le.xd(i+1))).or.& |
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1071 | ((x.le.xd(i)).and.(x.ge.xd(i+1)))) then |
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1072 | y=yd(i)+(x-xd(i))*(yd(i+1)-yd(i))/(xd(i+1)-xd(i)) |
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1073 | exit |
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1074 | endif |
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1075 | enddo |
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1076 | |
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1077 | |
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1078 | end subroutine interpolf |
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1079 | |
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